Discussion
Why does envelope-detected AM fall below unity?
Answer: D
The carrier takes at least two thirds of the transmitted power and carries no information, so the output ratio is worse than the channel ratio by that factor. Envelope detection does introduce nonlinearity below threshold, but the factor of three applies well above it. The double bandwidth is shared with DSB-SC, which nevertheless achieves unity. And the quadrature argument describes the detail rather than the dominant cause. Following where the power goes explains the figure of merit directly.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development